Crystal power walks to her neighbor's house which is 200 meters to the right of her house before they go to the gym together. She gets to her neighbor's house in 2 minutes. What is her average speed?

Question

Quizplus · Accepted Answer

Velocity is a vector quantity, meaning it has both magnitude and direction. The magnitude of velocity is speed. When the speed of an object is paired with the object's motion, you have the velocity. Since the question only asks for average speed, the answer will only contain magnitude, not direction.
Step 1: Find the distance traveled, convert any units needed
The distance traveled is the total round trip distance. It is 200 meters.
Step 2: Find the time taken to travel this distance, convert any units needed
The time is 2 minutes but this must be converted to seconds:
2 min x 60 sec =  120 seconds
Step 3: Find the average speed by dividing the distance traveled by the time
200 meters 
120 seconds   = 1.67 m/s

Crystal Power Walks to Her Neighbor's House Which Is 200